Simple, easy to follow representations of classification systems
Good key is:
Clear
Simple
Easy to use
We us them because:
Easier than detailed descriptions
Show at a glance distinguishing characteristics
Make it easy to identify objects not seen before
Give consistent answers, regardless of who is using them
Dichotomous keys
Must common branching keys
2 choices at each branch
Start at the tip with a large group, progressively dividing into smaller groups.
Process for sorting all living things called taxonomy EG. Humans- homo sapiens
classification key: kingdom phylum class order genus species
We use systems of classification to look for patterns and make inferences about situations. How and why do we group things?"
biologists use a set of characteristics to help decide if something is living or not.
characteristics common to ALL living things:
Movement
Reproduce
Growth
Take in and use gases from the air or water
Take in energy for use
Produce waste
Respond to stimuli
Made of cells
Individual that has life is referred to as an organism some non-living thing possess characteristics but not all e.g. fire or water. Animals they are heterotrophs. Means they cannot make their own food, and must eat to survive. Food is digested into glucose Glucose provides all the energy the animal needs. Process is called cellular respiration. Glucose + oxygen =>energy + carbon dioxide + water. c₆ H₁₂ o₆ + ₂ => CO₂ + H₂O endotherms or endothermic (warm blooded) Ectothermic or ectoderms (cold blooded) Plants Plants produce glucose from the process of photosynthesis Carbon dioxide + water + energy=> glucose + oxygen
organisms that produce their own food are called autotroph
millie
5 kingdoms:
animals
plants
fungi e.g mushrooms
protist e.g seaweed
monera e.g bacteria
Keys
- make classifications easier
- Simple, easy to follow representations of classification systems
Good key is:- Clear
- Simple
- Easy to use
We us them because:- Easier than detailed descriptions
- Show at a glance distinguishing characteristics
- Make it easy to identify objects not seen before
- Give consistent answers, regardless of who is using them
Dichotomous keys- Must common branching keys
- 2 choices at each branch
- Start at the tip with a large group, progressively dividing into smaller groups.
Process for sorting all living things called taxonomyEG. Humans- homo sapiens
classification key:
kingdom
phylum
class
order
genus
species
We use systems of classification to look for patterns and make inferences about situations. How and why do we group things?"
biologists use a set of characteristics to help decide if something is living or not.
characteristics common to ALL living things:
- Movement
- Reproduce
- Growth
- Take in and use gases from the air or water
- Take in energy for use
- Produce waste
- Respond to stimuli
- Made of cells
Individual that has life is referred to as an organism some non-living thing possess characteristics but not alle.g. fire or water.
Animals
they are heterotrophs.
Means they cannot make their own food, and must eat to survive.
Food is digested into glucose
Glucose provides all the energy the animal needs.
Process is called cellular respiration.
Glucose + oxygen =>energy + carbon dioxide + water.
c₆ H₁₂ o₆ + ₂ => CO₂ + H₂O
endotherms or endothermic (warm blooded)
Ectothermic or ectoderms (cold blooded)
Plants
Plants produce glucose from the process of photosynthesis
Carbon dioxide + water + energy=> glucose + oxygen
organisms that produce their own food are called autotroph